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Cheap flights from Porto to Sydney from $2,295

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — SYD
26 Feb — 5 Mar1
1 adult

Cheap flight deals from Porto to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 February 2025.

Round-trip from

$2,295

Popular in

December

Cheapest in

February

Average price

$2,035
KLM
  • KLM
  • 3/3-10/3
  • 4 total stops
  • 63h 40m total
  • Porto to Sydney
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($61 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($78 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from Porto to Sydney

Cheapest flights from Porto to Sydney
Explore the most affordable flight options available from Porto to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Mon 3/311:45OPO - SYD
2 stops31h 45mMultiple Airlines
Mon 10/312:10SYD - OPO
2 stops31h 55mMultiple Airlines
Deal found 20/2$2,295
Sun 16/312:05OPO - SYD
2 stops36h 45mSWISS
Tue 1/415:05SYD - OPO
2 stops50h 50mSWISS
Deal found 20/2$2,567
Mon 3/308:30OPO - SYD
3 stops38h 05mAir Canada
Mon 10/311:20SYD - OPO
3 stops58h 55mAir Canada
Deal found 20/2$2,661
Mon 3/316:10OPO - SYD
3 stops28h 15mKLM
Mon 10/312:10SYD - OPO
2 stops31h 55mKLM
Deal found 20/2$2,689
Sun 16/320:05OPO - SYD
2 stops47h 50mBritish Airways
Tue 1/415:40SYD - OPO
2 stops37h 50mBritish Airways
Deal found 20/2$2,874

Find flights from Porto to Sydney within your budget

Customise your flight search to find flights from Porto to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 21 February 2025.

Fly from

Porto

Fly to

Sydney

Route

Depart

Return

Price

PortoSydney

OPO - SYD

OPOSYD

Porto

Mon 3/3

11:45-06:30

2 stops31h 45m

Sydney Kingsford Smith

Mon 10/3

12:10-09:05

2 stops31h 55m

$2,295

PortoSydney

OPO - SYD

OPOSYD

Porto

Sun 16/3

12:05-11:50

2 stops36h 45m

Sydney Kingsford Smith

Tue 1/4

15:05-07:55

2 stops50h 50m

$2,567

PortoSydney

OPO - SYD

OPOSYD

Porto

Mon 3/3

08:30-09:35

3 stops38h 05m

Sydney Kingsford Smith

Mon 10/3

11:20-11:15

3 stops58h 55m

$2,661

PortoSydney

OPO - SYD

OPOSYD

Porto

Mon 3/3

16:10-07:25

3 stops28h 15m

Sydney Kingsford Smith

Mon 10/3

12:10-09:05

2 stops31h 55m

$2,689

PortoSydney

OPO - SYD

OPOSYD

Porto

Sun 16/3

20:05-06:55

2 stops47h 50m

Sydney Kingsford Smith

Tue 1/4

15:40-19:30

2 stops37h 50m

$2,874

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Best time to book a flight from Porto to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Porto with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Porto to Sydney

Get recent, data-driven insights about flights from Porto to Sydney including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Porto to Sydney?

Currently, May is the cheapest month in which you can book a flight from Porto to Sydney (average of $129). Flying from Porto to Sydney in October is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sydney ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated 21 February 2025.
KLM
7.8
Good
1,331 reviews
Check prices

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,331 reviews
KLM
7.8
Good
1,331 reviews
Check prices

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

SWISS
7.5
Good
1,568 reviews
KLM
7.8
Good
1,331 reviews
Check prices

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Air Canada
7.0
Good
8,756 reviews
KLM
7.8
Good
1,331 reviews
Check prices

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

British Airways
6.6
Okay
6,762 reviews
KLM
7.8
Good
1,331 reviews
Check prices

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Related info for your journey

Find useful and relevant information for your journey from Porto to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Porto to Sydney round-trip?

    Our cheapest airline available from Porto to Sydney is SWISS. Our recent data shows that you can find tickets from as low as $2,567 on this airline. Additional options worth looking into are Air Canada and KLM, starting at $2,661 and $2,689 round-trip.

  • Can I find deals for flights from Porto to Sydney that include hotel bookings?

    Yes. In addition to deals on Porto to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Porto to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to Sydney.

  • Can I find deals for business class flights from Porto to Sydney?

    Yes. Cheapflights offers flight deals from Porto to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Porto to Sydney?

    Currently, May is the cheapest month in which you can book a flight from Porto to Sydney (average of $129). Flying from Porto to Sydney in October is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Randwick
Manly
Penrith
Coogee
Cronulla
Terrigal
Bondi Beach
Lithgow
Leura
Swansea

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Porto to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Lisbon to Sydney flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Porto to Sydney?

Deals for Porto to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Porto to Sydney?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Porto to Sydney for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Porto to Sydney with no change fees?

Need flexible booking options for your flight to Sydney from Porto? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Porto to Sydney become cheaper?

Yes, Cheapflights offers price alerts on Porto to Sydney flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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